The Seiko 5P31-5C40 is a watch model based on the 5P31 movement.
Parts List
| ESAW08JM01 | crystal |
| 35M82NA1 | crown - crown |
| 0A2600N01 | case back gasket - case back gasket |
| B1533G | band - metal band |
| BMA17G | band - leather band |
| BMJ24G | band - leather band |
| BMJ25G | band - leather band |
| B1533G-BK3G | clasp - clasp |
| 5P315C40 | others - case back |
| 5P315C4075 | others - case |
| 5P315D50XB14 | others - dial |
| 5P315D50XG14 | others - dial |
| 5P315D60X995 | others - dial |
| 5P315D60XG15 | others - dial |
| 5P319 | others - machine code |
| 82810520 | others - case ring |
| A160BS | others - push pin |
| 0351670 | others - winding stem |
| 13SC04A2 | others - second hand |
| 08T32DGM | others - minute hand |
| 08T32DGH | others - hour hand |
| 0Z0060B01 | others - crown and stem gasket |